Lemco HDMOD-4 User manual

Lemco HDMOD-4 manual v1.0
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1 x HDMI to DVB-T (COFDM)
"Home" modulator
HDMOD-4
Operation Manual

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1. IMPORTANT SAFETY PRECAUTIONS INFORMATION
READ THE FOLLOWING WARNINGS BEFORE YOU USE YOUR DEVICE
WARNING
The following safety precautions must be observed to prevent fire or electric shock
hazard. Safety precautions include but are not restricted to the following:
Power supply / Mains cord
Operate the unit only within the voltage range defined as appropriate by the
manufacturer.
Occasionally check the power connector and remove dirt or dust that may
have accumulated.
Use only the mains cord that comes with your unit.
Do not operate the unit or plug in the mains cord if it is broken, split, or
damaged in any way.
Do not place the mains cord next to heating devices. Do not pull it, place
heavy objects on it or damage it in any way. Keep it out of reach of children.
Ensure that the device is plugged in a properly grounded socket. Insufficient
grounding may cause electrocution.
Always carefully disconnect all plugs by pulling on the plug and not on the
cord. Make sure the unit's power switch is turned off before removing the
cord from an outlet.
Disconnect the mains cord when the unit is not in use for long periods of
time or during storms.
Do not connect the unit to a multiple-outlet to avoid plug overheating.
Disassembling
This unit contains parts that cannot be repaired by the user. Do not
disassemble or try to repair it as this will void all warranties. Please contact
the manufacturer if you experience any problems with your unit.
Water/humidity
Do not keep the unit in a humid place or near water.
Do not plug/unplug the unit with wet hands.
Fire
Never place a candle or another source of fire on the unit as it may fall and
start a fire.
If the mains cord or the power connector is damaged or destroyed, or if there
is a sudden loss of picture during operation, or if you notice a strange smell or
there is smoke, immediately switch the unit off, disconnect the mains cord
and contact the manufacturer’s technical support department.

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Installation / Storage
This unit contains high precision pieces of electronics. To ensure optimal
performance and avoid damage, do not store it in any location where it may
collect dirt, duct, lint, etc. Do not expose it to extreme heat or cold (e.g. in
direct sunlight, near a heater or in the car during the day). Place the unit in a
secure place to avoid falls.
Before moving the unit, always unplug all cords first.
When installing the unit, make sure that an outlet is within easy reach. In
case of malfunction, switch the unit off and unplug the power cord. When
the unit is not in use for a long period of time, make sure that the mains cord
is disconnected.
Connectivity
Before connecting the unit to other electronic devices, always switch off and
unplug all devices.
Maintenance
Do not spill liquids on the unit. Do not use any diluents or volatile liquid to
clean the unit. Instead, use a soft slightly damp cloth and allow the unit to dry
completely before using again.
Handling
Do not poke your finger into the openings on your unit.
Never put paper, metal parts or other objects into the openings of your unit.
If you suspect that there are foreign parts in your unit, switch it off and
unplug the mains cord. Contact the manufacturer’s technical support
department.
Do not step on or place heavy objects on top of the unit. To avoid hardware
damage, handle all buttons, connectors and switches gently.

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2. INTRO
Congratulations on purchasing the HDMOD-4. You now own a high quality, “Home”
DVB-T HD modulator with Bluetooth interface. To get the most out of your purchase,
please take the time to carefully read through this manual
3. INSTRUCTIONS
3.1 DESCRIPTION
The HDMOD-4 is a high quality DVB-T "Home" modulator which receives one HDMI
input and converts it into one RF DVB-T channel on its output. The excellent picture
(Full HD 1920*1080-30p) and modulation quality (MER~35dB) renders the HDMOD-4
an ideal solution for distributing SD/HD digital signals received from any device with
an HDMI output (e.g. a DVD player, STB or camera in a CATV network using the DVB-
T technology).
The user has the ability to control the device remotely using a Bluetooth interface by
downloading and using the appropriate application from the Android or IOS market
for free.
Finally, the HDMOD-4’s small size and metal case provides excellent electromagnetic
shielding as well as great temperature dissipation and rigidness.
3.2 FEATURES
High quality and performance
Very clean RF spectrum
MER value ~ 35dB
RF output frequencies 174...862MHz
H.264 HD encoder bitrate 1-19Mbps
HDCP support
Bluetooth interface
Very small size
External power supply
3.3 SETUP
3.3.1 App installation
The HDMOD-4 can be programmed on the field using the following 4 simple steps:
Step 1
Power up the HDMOD-4, connecting the external power supply. The HDMOD-4 will
need 20-30secs to initialize and the status indicator will blink until the procedure is
finished. After the status indicator remain constantly green, you will be able to
connect to the HDMOD-4.

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Step 2
Download the “Lemco” app from Google play or App Store:
Step 3
The app will scan for any available devices that are within range (Picture No1). The
list that appears, shorts first the device closest to your phone or tablet. If your phone
or tablet is moved closer to another device, that device will immediately move on
top of the list. Choose the device that you want to connect with and press “Connect”
and the status indicator will become red.
(Picture No1)

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Step 4
To connect to a device you will need to enter the default PIN: 1234 (Picture No2)
3.3.2 Using the app
When the “Lemco” app will be initialized, the main screen will be displayed (Picture
No3):

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(Picture No3)
The main menu consists of the following options:
Quick Settings
Custom profiles
DVB-T
Output attenuator
Encoder
Transport Stream
Other settings
Info
Help
3.3.2.1 Quick Settings
This menu provides the ability to program several modulators easily and quickly. All
you need is to enter the following parameters:
The output RF channel
Set the output level by adjusting the modulator’s attenuator
Set the Profile No.
How the profile works
In an installation all the modulators (or Mux in general) need to have different values
of the following fields to avoid conflict in the automated scan of the TV sets:
Program Name Service ID TS ID
For that reason, the user must always select a unique Profile number in every
modulator starting from Number #1.
E.g. If we want to install three modulators in a CATV network, in the profile option
we will select:
Profile Νο 1for the 1st modulator
omeaning: Program Name = DTV 1
omeaning: Service ID = 1
omeaning: TS ID = 2240
Profile Νο 2for the 2nd modulator
omeaning: Program Name = DTV 2
omeaning: Service ID = 2
omeaning: TS ID = 2241
o
Profile Νο 3for the 3rd modulator
omeaning: Program Name = DTV 3
omeaning: Service ID = 3
omeaning: TS ID = 2242

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As a result, all the above modulators have different values in the above fields.
3.3.2.2 Custom Profiles
The “Lemco” app provides the ability to create custom profiles under your custom
name (Picture No4).
By clicking the “+” icon you are able to save the current configuration in your mobile
device for future use. You are able to create as many customs profiles as you need,
erase them or clone them.
(Picture No4)

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3.3.2.3 DVB-T
In the “DVB-T” menu (Picture No5), “Lemco” app provides the ability to setup all the
necessary DVB-T parameters according to the standards, as follows:
Channel: Select the desired output RF channel
Frequency: Select the output RF channel frequency
Bandwidth: Select the channel bandwidth
Constellation: Select the channel constellation
Modulation: Select the channel modulation mode
Guard interval: Select the guard interval
Code Rate: Select the desired code rate
(Picture No5)
3.3.2.4 Output Attenuator
In the “Output attenuator”(Picture No6) menu, “Lemco” app provides the ability to
increase/decrease the output level in steps of 10dB.

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(Picture No6)
Set to 0dB: Set the output level to 90dBμV
Set to -10dB: Set the output level to 80dBμV
Set to -20dB: Set the output level to 70dBμV
3.3.2.5 Encoder
“Lemco” app provides the ability to set manually all the encoder parameters (Picture
No7).
(Picture No7)

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Video Bitrate: Select the video bitrate of the encoder
Resolution: Select the output resolution of the modulator
Audio Bitrate: Select the audio bitrate of the encoder
Audio encoding: Select the audio encoding of the encoder
HDCP: Enable or disable the HDCP function
3.3.2.6 Transport Stream
“Lemco” app provides the ability to set manually all the TS parameters
(Picture No8).
Network name: Set the network name
Network ID: Set the network ID
Original Network ID: Set the original network ID
Service name: Set the service name
Service ID: Set the service ID
Service provider: Set the service provider
TS ID: Set the TS ID
PMT ID: Set the PMT PID number
Video PID: Set the video PID number
LCN Enabled: Enable or disable the LCN function
LCN No: Set the LCN number
LCN Provider: Select the LCN provider
(Picture No8)

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3.3.2.7 Other settings
“Lemco” app provides the ability to change the PIN code, apply factory defaults, change
the app language or update the device via the Bluetooth interface.
(Picture No9).
(Picture No9)
3.3.2.8 System Info
“Lemco” app, in the “System info” menu provides several details of the device.
(Picture No10).
(Picture No10)

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3.3.2.9 Help
“Lemco” app, in the “Help” menu provides the device’s manual, as well as the FAQ and the
troubleshooting guide (Picture No11).
(Picture No11)

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4. TECHNICAL SPECIFICATIONS
Input
Type: 1 x HDMI
Connector: 1 x HDMI Type A
Video coding: MPEG-4 AVC/H.264
Profile: High profile 4.0
Resolution: 1920x1080-30p for HDMI
PAL 720x576@25fps
HDCP support: Yes
Audio: HDMI & Mono/Stereo
Audio encoding: MPEG2, ACC, AC3
Standard: MPEG-1 Layer II
Audio Bit Rate: 64, 96, 128, 192, 256, 320, 384 kbps
Level: 0.5Vpp to 1.0Vpp adjustable
H.264 Encoder
Standard: MPEG-4 AVC/H.264
Bit Rate: 1 –19 Mb/s adjustable
Configurable parameters: Service Name, Service ID, Video PID,
Audio PID, PMT PID
Transport Stream Processing
Automatic regeneration: NIT,PAT,CAT,SDT, PMTs,
EITs tables
Configurable parameters: TS ID, Original Network ID,
Network ID,Provider Name
LCN support: Yes
LCN Providers: Nordig, ITC/UK, EICTA/Europe,
New Zealand
DVB-T Output
Standard: EN 300 744
Bandwidth: 5,6,7,8 MHz
Mode: 2K,8K
Constellation: QPSK,16QAM, 64QAM
Guard interval: 1/4, 1/8, 1/16, 1/32
Code rate: 1/2, 2/3, 3/4, 5/6, 7/8
RF Output
Type: RF DVB-T (COFDM)
Output frequencies: 470…862MHz
Output level: 90dbμV max.
Connector: 75Ω - F, female
Output attenuator: 0…25dB
MER: 35dB (Typical)
Shoulder attenuation: >45dBc
Connectors: 1 x F - female

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Programming interface via Bluetooth
Requires version 4.0 and above
ETSI EN 300 328 and EN 300 440 Class 2
(Europe), FCC CFR47 Part 15 (US) and ARIB STD-
T66 (Japan).
Platform support: Android version 4.4.2 and above
iOS version: 9.3 or above
iPhone: 4S or newer
iPad: 3rd gen or newer
General
Power supply: +12VDC
Power supply consumption: 290 mA max.
Operating temperature: 0 ºC to 50 ºC
Storage temperature: -10 ºC to +70 ºC
Humidity: Up to 90%
Dimensions: 131x72x25,50 mm
Weight: 0.14Kg

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5. DIMENSIONS
*dimensions in mm

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6. LEMCO LIMITED WARRANTY
This Lemco unit is guaranteed against defects in workmanship and materials for a
period of five (5) years beginning on the date of purchase of the product. During the
applicable warranty period, Lemco will repair or replace at our sole option, without
charge, any defective component part of the purchased unit. The unit is to be
delivered packed in adequate packing AFTER an authorization for return has been
received.
The owner’s responsibilities are to use the instrument in accordance with its written
instructions, to provide transport to and from our facilities in the event service is
required, and to provide proof of purchase if requested.
Our warranty does not cover any problem resulting from:
(a) accident; abuse; neglect; shock; electrostatic discharge; heat or humidity beyond
product specifications; improper installation, operation, maintenance or
modification
(b) any misuse contrary to the instructions in the user manual
(c) malfunctions caused by other equipment.
WARNING!!
Our limited warranty is considered void if a product is returned with removed,
damaged or tampered labels or any alterations (including removal of any component
or external cover) carried out by unauthorized personnel.
OUT OF WARRANTY SERVICING
We repair and service units of our production even once the warranty has expired, if
this is economically the best solution to the customer.
The mechanical and electronic spare parts are replaceable for a five-year period
after production when the circuits are assembled with discrete components. When
integrated circuits are used, the supply of spare parts is guaranteed up to the
depletion of our stock and, depending on the possibility of procuring them on the
worldwide market.
To avoid any unnecessary loss of time, it is very important that the instrument be
returned to our premises accompanied by a proper delivery note, duly completed
with all the required information, as per the legal dispositions currently enforced.

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7. WARNINGS
Content warning
This document contains preliminary information about a product of Lemco company.
Lemco reserves the right to make any changes or modifications at any time without
prior notice.

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APPENDIX B
DVB-T bitrates(Mbit/s) for 8 MHz bandwidth (non-hierarchical systems)
Modulation
Coding
Rate
Guard Interval
1/4
1/8
1/16
1/32
QPSK
1/2
4.976
5.529
5.855
6.032
2/3
6.635
7.373
7.806
8.043
3/4
7.465
8.294
8.782
9.048
5/6
8.294
9.216
9.758
10.053
7/8
8.709
9.676
10.246
10.556
16-QAM
1/2
9.953
11.059
11.709
12.064
2/3
13.271
14.745
15.612
16.086
3/4
14.929
16.588
17.564
18.096
5/6
16.588
18.431
19.516
20.107
7/8
17.418
19.353
20.491
21.112
64-QAM
1/2
14.929
16.588
17.564
18.096
2/3
19.906
22.118
23.419
24.128
3/4
22.394
24.882
26.346
27.144
5/6
24.882
27.647
29.273
30.160
7/8
26.126
29.029
30.737
31.668

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8. NOTES
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